SoX (Sound eXchange) is a command line utility that can convert various formats of computer audio files to other formats. It can also apply various effects to these sound files, and, as an added bonus, SoX can play and record audio files.

Carla is a modular audio plugin host, with features like transport control, automation of parameters via MIDI CC and remote control over OSC. Carla currently supports LADSPA (including LRDF), DSSI, LV2, VST2, and VST3 plugin formats, plus SF2 and SFZ file support. It uses JACK as the default and preferred audio driver but also supports native drivers like ALSA.

RtMidi is a set of C++ classes (RtMidiIn, RtMidiOut, and API specific classes) that provide a common cross-platform API for realtime MIDI input/output.

The Odio SACD shared library is a decoding engine which takes a Super Audio CD source and extracts a 24-bit high resolution WAV file. It handles both DST and DSD streams.

This is a simple Milkdrop-like music visualizer that uses the projectM library to visualize audio input.

This package provides a conversion utility for LV2 Plugin developers to generate C headers from Turtle files.

Libzita-resampler is a C++ library for resampling audio signals. It is designed to be used within a real-time processing context, to be fast, and to provide high-quality sample rate conversion.

Tenacity is a multi-track audio editor designed for recording, playing and editing digital audio. It features digital effects and spectrum analysis tools.

libfreeaptx is an implementation of the Audio Processing Technology codecs aptX and aptX HD, mainly intended for use with an A2DP bluetooth profile.

JackTrip is a multi-machine audio system used for network music performance over the Internet. It supports any number of channels (as many as the computer/network can handle) of bidirectional, high quality, uncompressed audio signal streaming.

Python-SoXR is a Python wrapper of libsoxr, a high quality, one-dimensional sample-rate conversion library.

The LV2 Toolkit (LVTK) contains libraries that wrap the LV2 C API and extensions into easy to use C++ classes. It is the successor of lv2-c++-tools.

QJackRcd is a simple graphical stereo recorder for JACK supporting silence processing for automatic pause, file splitting, and background file post-processing.

Libxmp is a library that renders module files to PCM data. It supports over 90 mainstream and obscure module formats including Protracker (MOD), Scream Tracker 3 (S3M), Fast Tracker II (XM), and Impulse Tracker (IT).

This is a free software version of SGI's audiofile library. It provides a uniform programming interface for processing of audio data to and from audio files of many common formats.

Currently supported file formats include AIFF/AIFF-C, WAVE, and NeXT/Sun .snd/.au, BICS, and raw data. Supported compression formats are currently G.711 mu-law and A-law.

redumper is a low-level byte perfect CD disc dumper. It supports incremental dumps, advanced SCSI/C2 repair, intelligent audio CD offset detection, among other features. redumper is also a general purpose DVD/HD-DVD/Blu-ray disc dumper.

TinyALSA is a small library to interface with ALSA in the Linux kernel.

dsp is an audio processing program with an interactive mode.

RtMidi is a set of C++ classes (RtMidiIn, RtMidiOut, and API specific classes) that provide a common cross-platform API for realtime MIDI input/output.

Butt is a tool to stream audio to a ShoutCast or Icecast server.

cli-visualizer displays fast-Fourier transforms (FFTs) of the sound being played, as well as other graphical representations.

qpwgraph is a graph manager dedicated to PipeWire, using the Qt C++ framework. It provides a visual interface to audio and video connections managed by PipeWire.

Guitarix is a virtual guitar amplifier running JACK. Guitarix takes the signal from your guitar as a mono-signal from your sound card. The input is processed by a main amp and a rack-section. Both can be routed separately and deliver a processed stereo-signal via JACK. You may fill the rack with effects from more than 25 built-in modules including stuff from a simple noise gate to modulation effects like flanger, phaser or auto-wah.

This package provides a LADSPA plugin for a Wah effect with envelope follower.